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Patent Searching and Data


Title:
NOVEL THERMALLY PROTECTED VARISTOR
Document Type and Number:
WIPO Patent Application WO/2019/205864
Kind Code:
A1
Abstract:
The present application discloses a novel thermally protected varistor, comprising a detachment device, a first varistor assembly, and a second varistor assembly. The first varistor assembly and the second varistor assembly are connected in series via an alloy layer having a low melting point. If the alloy layer having a low melting point is melted, the detachment device is actuated to divide the alloy having a low melting point. Two varistors of the present application are directly connected via a solder joint without any transitional connection, such that a heat transfer path is reduced to a minimum. When compared to conventional products comprising a varistor and a detachment device, the novel thermally protected varistor of the present application has a shorter actuation time when an abnormal current passes therethrough. The two varistors are also physically separated by a sliding block after the solder joint has melted, so as to further reduce the risk of a fire caused by a situation in which a detachment device cannot stop a current when a varistor through which the current passes breaks down due to a short circuit.

Inventors:
ZHANG, Xianggui (NO.8067 West Xiangan Road Torch High-Tech Industrial District Xiangan, Xiamen, Fujian 1, 361101, CN)
Application Number:
CN2019/079719
Publication Date:
October 31, 2019
Filing Date:
March 26, 2019
Export Citation:
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Assignee:
XIAMEN SET ELECTRONICS CO., LTD (NO.8067 West Xiangan Road Torch High-Tech Industrial District Xiangan, Xiamen, Fujian 1, 361101, CN)
International Classes:
H02H9/04; H02H5/04
Foreign References:
CN1953109A2007-04-25
CN208174263U2018-11-30
CN101741081A2010-06-16
US20100127625A12010-05-27
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (702 Shenzhou Building, No.31 South Street Zhongguancun, Haidian District, Beijing 1, 100081, CN)
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